helpers.h

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/*
 * SPDX-FileCopyrightText: 2025 Tom Hert <git@annsann.eu>
 * SPDX-FileCopyrightText: 2025 HAW Hamburg
 * SPDX-License-Identifier: LGPL-2.1-only
 */
 
#pragma once
 
#define ATOMIC_XOR_WRITE 0x1000u
#define ATOMIC_BITMASK_SET_WRITE 0x2000u
#define ATOMIC_BITMASK_CLEAR_WRITE 0x3000u
 
#ifdef __cplusplus
extern "C" {
#endif
 
static inline void atomic_xor(volatile uint32_t *reg, uint32_t val) {
    *(volatile uint32_t *)((uintptr_t)reg | ATOMIC_XOR_WRITE) = val;
}
 
static inline void atomic_set(volatile uint32_t *reg, uint32_t val) {
    *(volatile uint32_t *)((uintptr_t)reg | ATOMIC_BITMASK_SET_WRITE) = val;
}
 
static inline void atomic_clear(volatile uint32_t *reg, uint32_t val) {
    *(volatile uint32_t *)((uintptr_t)reg | ATOMIC_BITMASK_CLEAR_WRITE) = val;
}
 
static inline void reset_component(uint32_t reset_value,
    uint32_t reset_done_value) {
    atomic_clear(&RESETS->RESET, reset_value);
    while (~RESETS->RESET_DONE & reset_done_value) {
        /* Wait for the reset to complete */
    }
}
 
#ifdef __cplusplus
}
#endif